Update documentation on durability settings

I can see the durability options in enum.js and in collection.js but setting them as suggested here https://docs.couchbase.com/nodejs-sdk/3.0/howtos/kv-operations.html :

var response=await coll.upsert('fred',{'harry':'paul','little':'large'},{durabilityLevel:couchbase.DurabilityLevel.Majority});

Returns

TypeError: Cannot read property 'Majority' of undefined

What am I missing? I tried prefixing DurabilityLevel with couchbase.enums as well, but to the same effect.